Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is clear. The description adds valuable context: rendering occurs without spending credits and missing price data is reported explicitly, which goes beyond annotations. It doesn't detail rate limits or auth needs, but those are less critical given annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences that front-load the core purpose and then add a key behavioral trait. No extraneous information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the main action and a crucial cost-related aspect, but with 4 parameters at 0% schema coverage, it leaves gaps in parameter explanation. No output schema exists, so describing return values isn't required, but the description could be more complete about what 'render' entails or what the output contains.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, meaning all parameters (workspaceId, templateId, version, parameters) lack documentation in the schema. The description mentions 'parameters' and 'render a template' but doesn't explain required parameters, their formats, or the nested 'parameters' object, failing to compensate for the coverage gap.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (render/validate) and resource (template) and clarifies it estimates generation cost. It contrasts with sibling run_production_template by emphasizing cost estimation without spending credits, though the name 'validate_production_template' might suggest more than just rendering, creating slight ambiguity.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Implicitly tells when to use it: before running a template to estimate costs. However, it doesn't explicitly name alternatives like run_production_template or quote_generation, leaving some inference to the agent.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.